JPS6186197A - Edge fixing-bolt clamping releasing device for rotary machining cylinder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to a business form rotary printing machine, etc., which performs processes such as mincing and cutting in one rotation, such as a sewing machine cylinder used to perform mincing or cutting. This invention relates to a bolt tightening device that automatically tightens and loosens bolts for fixing blades in grooves in rotary machining cylinders.

Conventional technology] 1 for continuous forms such as computer printer forms
There are perforations for cutting and folding each set. This perforation is provided perpendicular to the flow of continuous forms, and is used to pinch (cut) the perforations.

The length of the uncut part) is selected depending on the paper type (paper thickness: 1) and post-processing method (hand-cut, 3-machine cut). When this is done, the paper is passed between a cylindrical minon cylinder, which is made by inserting and fixing a thin sheet-shaped miso blade into a groove formed in the longitudinal direction on the outer circumferential surface, and a receiving cylinder placed opposite the cylinder.

The perforations are made at regular intervals by rotating the perforation barrel and receiving barrel.

Conventionally, as shown in FIG. 7, as a means for fixing the sewing machine blade 3 to the groove 2 of a minon [141], a presser foot 5 in which hexagonal bolts 6 are kneaded at regular intervals is used. In this structure, in order to assemble the perforation blade 3 to a predetermined depth, 1. First, insert the perforation blade 3 into the groove 2, and make it higher than the height at which the predetermined perforation can be made (increase the amount of protrusion from the groove). Set,
Turn the bolt 6 and lightly press the presser foot 5 against the sewing machine blade to temporarily fix it. At this time, the holding force of the presser plate 5 is weaker than during the final setting, so that if you push the cutting edge forcefully, it will retract into the groove (hereinafter referred to as temporary tightening). After this, place the cutting edge of the blade against the receiving cylinder and level it so that it touches the receiving cylinder evenly in the width direction.

Turn the bolt 6 again and firmly press the temporary presser foot 5 against the blade 3 to fix the blade (hereinafter referred to as final tightening).

Problems to be Solved by the Invention Although the above-mentioned assembly of the blade to the sewing machine barrel is done manually, one assembly of the sewing machine blade requires the uniformity of temporarily tightening two bolts 6 during the work. It is necessary to tighten it.

A) It requires a lot of practice and the time required for this work is extremely large. Particularly when temporarily tightening, the sewing machine blade must be pressed down with such a slight force that it will retract into the groove, and it is extremely difficult to adjust all the bolts uniformly to achieve such a delicate force. , and the greater the number of bolts, the more difficult it becomes.-The present invention, therefore, fixes a thin strip-shaped blade such as a sewing machine blade or a cutting blade to a groove of a rotary processing cylinder such as a sewing machine printer. It is an object of the present invention to provide a bolt tightening/loosening device that can automatically tighten bolts used for this purpose to a predetermined torque or loosen them to remove the number of blades.

Means for Solving the Problem The inventors of the present invention have conducted various studies on mechanizing the work of assembling the blade, and as a result, as shown in Fig. 7, the bolt 6 for tightening and loosening the blade is oriented horizontally in s2. It is located in.

Since it is difficult to turn the blade from above the groove, we developed a blade fixing device 11 that can fix the blade 3 in the groove 2 using a bolt 14 placed in the direction of the groove, as shown in Figure 4. death,
The blade 1 is capable of automatically tightening and loosening the bolt 14.
On the 1st day of the 1st year, we developed a device that was designed to meet the needs of our customers.

The blade fixing bolt tightening/loosening device of the present invention includes a pedestal 22, which is held by the pedestal 22, and is movable in the direction approaching and away from the rotary machining cylinder 1 while maintaining a parallel state to the rotary machining cylinder 1 described in n7J. It comprises a support member 26 and a power wrench 40 held by the support member 26, and the power wrench 40 is a bit that engages with and rotates the support member 26. a motor 42 that rotates the bit 41 in both forward and reverse directions; means for controlling the torque to a predetermined value for tightening in the forward direction; It is characterized in that it has a coupling 43 that allows it to retreat in the axial direction. Here, preferably several Mi power wrenches 4° are provided corresponding to each bolt 14.

Operation of the rotary machining cylinder I using the blade fixing bolt tightening and loosening device of the above i. ;p To tighten bolt 14 of 2 to the specified torque.

First, with the i'#2 of the rotating processing cylinder 1 facing upward and the power wrench 40 positioned at jA>2, the support member 26 is rotated while rotating the bif 41 of the power wrench 40.
is lowered from above the rotary processing cylinder l. This lowering causes the bit 41 of the power wrench 40 to move to the corresponding bolt 14.
(specifically, in the hexagonal hole 14A of the head),
Tighten the bolt 14 to the specified tightening torque.

At this time, if the phase of the pin 41 and the corresponding hexagon hole do not match, the bit 41 will not be inserted into the hexagon hole of the pin 14, and the bit 41 will hit the head of the bolt 14 and descend. However, since the bit 41 can be retracted by the compression ring 43, there is no problem.
Even when a plurality of power wrenches 40 are used, as each bit 41 rotates, the bits 41 with one phase coincide with each other.
It is inserted into the hexagonal hole of the corresponding bolt one after another, and engages with all the bolts equally without any trouble.

In this way, the bolt is tightened to a predetermined torque (for example, temporary tightening torque or final tightening torque). Also, vice versa.

With respect to l/G2 with the blade fixed, the support member 26 is lowered to engage each bit 41 with the head of the bolt 14, and the bit is reversed to loosen the bolt and release the fixation of the blade 3. You can also do that.

EXAMPLES Below nine preferred examples of the present invention will be described in detail with reference to the drawings. Note that the following explanation applies the present invention to tightening and loosening the blade fixing bolt of a Minn fence; however, the present invention is not limited thereto, and can be applied to any arbitrary method in which a thin strip-shaped blade is attached to a groove formed on the outer peripheral surface. It is suitable for tightening and loosening the blade fixing bolts of rotary processing cylinders.

FIG. 3 is a perspective view showing a sewing machine barrel 1 and a receiving barrel 4 disposed opposite to the sewing machine barrel 1 suitable for using the blade fixing bolt tightening/loosening device of the present invention. The sewing machine barrel l has a plurality of grooves 2 on its outer peripheral surface,
A sewing machine blade 3 is fixed in the groove 2 by a blade fixing device 11.

As shown in FIGS. 4, 5, and 6, the blade fixing device 11 has a blade holding block 12 and a cutting block 13 arranged in the groove 2. The blade holding block 12 is arranged so as to be in contact with the sewing machine blade 3 and the bottom surface of the groove, and the surface opposite to the surface that contacts the Fuminon blade faces the bottom of the groove; therefore, it is inclined to become narrower. There is. On the other hand - PA block 1
3 is in contact with the blade holding block 12 and the groove side surface +! ! I
It has a t-plane and moves toward the groove bottom.

When the wedge effect presses the blade holding block 12 in the direction of the sewing machine blade 3 to fix the sewing machine blade 3, and conversely moves it upward,
This allows the blade holder block to be loosened and the sewing machine blade 3 to be removed. As a means for moving the cutting block 13 in the direction toward the groove bottom and vice versa, a hexagonal hole bolt 1-14 is arranged in the center of each wedge block 13, and the head of the bolt 14 is removed from the upper surface of the wedge block 13. The receiving plate 17 is attached to prevent this from occurring. Uke J,! 1i17 has a hole formed in the hexagonal hole 14A of the head of the bolt 14 for inserting a bit to be described later. Thus, by turning the bolt in the forward and reverse directions, the wedge block 13 can be moved up and down (in the direction toward the /s bottom and in the opposite direction).

Note that there is =& between the ++A block 13 and the bottom of the groove 2.
! A pair of coil springs 18 are provided so that the block 3 can move up and down without tilting. Further, a leaf spring 19 is arranged between the blade holding block 12 and the two groove surfaces at a position that does not interfere with mounting of the sewing machine blade. This leaf spring 1
9 acts to push out the blade holding block 12 toward the wedge block 13 when the cutting block 13 is moved upward, and to form a gap for inserting the sewing machine blade 3 between it and the side surface of /$2. - As can be clearly seen from FIG. 3, a plurality of sets (5 sets in the embodiment) of the blade retaining block 2 and the cutting block 13 with the grooves are used, each having a length that communicates within one groove 2. , fit means multiple bolts 1 for one groove 2.
4 is used.

1 and 2 are a side sectional view and a front view showing a blade fixing bolt tightening/loosening device 20 which is a preferred embodiment of the present invention. The blade changing device 20 has a mount 22 movably held on a frame 21 of a rotary printing press to which a sewing machine cylinder 1 is attached.

The pedestal 22 has a straight key 91 that engages with a rail on the frame 21.
F: 1I reception 23. Horizontal beam24. A support member 26 is held in the branch 25 so as to be movable up and down on a linear bearing 27S. The support member 26 is movable toward and away from the sewing machine barrel 1 while maintaining a parallel state to the sewing machine barrel 1 when the pedestal 22 is in the operating position shown. Further, a horizontal beam 28 is connected to the upper end of the column 25, and a pneumatic flip 29 is held on the beam 28. Pneumatic flip 29 moves support member 26 up and down.

Two power wrenches 40 are provided on the support members 26 in correspondence with the poles 14 of the sewing machine body 1. Each of the power wrenches 40 includes a bit 41 that can engage and turn the hexagonal hole 14A of the head of the bolt 14, a motor 42 that rotates the bit 41 in both forward and reverse directions, and a motor that rotates the bit 41 in both forward and reverse directions. and means (not shown) for controlling the torque to a predetermined value.

a coupling 4 connecting the bit 41 to a motor 42;
3, and the bins 41 are arranged parallel to the direction of movement of the support member 26. The coupling 43 is of a type that allows at least the bit 41 to move back in the axial direction, and is preferably of a type that has an IQ property that allows the bit 41 to tilt around 1. The bit 4゜1 has a hexagonal cross section so that its lower end engages with the hexagonal hole of the bolt 14, but it has an axial direction at the insertion part into the hexagonal hole so that it can be inserted into the hexagonal hole of the bolt even in an oblique state. It is preferable to have a roundness. Such a coupling and bit have the advantage that even if the center of the bit 41 and the center of the hexagonal hole of the bolt 14 are slightly deviated, the bit 41 can be tilted and inserted well into the hexagonal hole 14A.

For tightening by the motor 42, known methods can be used as means for controlling the torque to a predetermined value.2 For example, means for controlling the output torque of the motor 42 to be constant;
A device that stops the motor when the output torque of the motor 42 reaches a predetermined value. A torque sensor is placed between the bit and the motor to detect the torque when tightening the bit and stop the motor when the torque reaches a predetermined value. It is possible to use a device that either connects the motor to the bit or disconnects the motor and the bit.

In this embodiment, a DC motor is used as the motor 42.

Directly, J! [When the applied current to the motor reaches the set value,
A control circuit is provided that determines that the bolt has been tightened to a predetermined torque and cuts off the current to the DC motor. This control circuit is capable of setting two types of current setting values, one for temporary tightening and one for final tightening, and therefore, it is possible to tighten the bolt to either the preliminary tightening torque or the final tightening torque.

Next, a method of using the blade fixing port Ii loosening device 20 will be explained.

Normally, the blade fixing bolt II loosening device 20 is moved from the position shown in FIG. 1 to a position that does not interfere with perforation processing. When replacing the sewing machine blade, the sewing machine barrel 1 is first positioned at a predetermined rotational position for replacing the blade, and the groove 2 is located directly above the center of the sewing machine barrel 1. Next, the blade fixing bolt tightening/loosening device 20 is positioned at the position shown in FIG.

Next, the pneumatic frinzo 29 is operated to lower the support member 26, and at the same time, the motor 42 rotates in the forward direction (to tighten the bolt 14) to slowly rotate the bit 41. As the support member 26 descends, the bit 41 descends.

The heads of the respective bolts 14 are contacted. On this occasion.

Since the phase between the bit 41 and the hexagonal hole 14A of the bolt head is not always the same, the bit 41 is not immediately inserted into the hexagonal hole 14A of the bolt, but since the bit 41 can be retracted in the axial direction, the supporting member There is no problem with the descent of 26. Since each bit 41 is rotating, the bits 41 that match the phase of the hexagonal hole 14A of the bolt are inserted one after another into the hexagonal hole 14A. inserted bit 4
1 acts to further tighten the bolt 14, but the bolt 14
is already sufficiently tightened.

The via) 41 does not rotate and simply remains inserted into the hexagonal hole. All bits 41 are bolt hexagonal holes 14
After being inserted into A, the motor 42 moves concavely in the opposite direction for a predetermined period of time, loosens all the bolts 14 at the same time, and moves the 4y block 13 above l:S2. Along with the upper part 1 of the cutting block 13, the blade retainer pro and holder I2 are attached to the plate bar 2.1.
9 to release the fixation of the sewing machine blade 3. In this state, remove the sewing machine blade 3 by hand or using a suitable tool.

Install the prayer sewing machine blade 3.

Next, the first motor 42 starts rotating in the forward direction, rotates the bit 41, and tightens the bolt 14. For this reason, the wedge block 13 moves toward the bottom of the force transfer t2, and the blade holding block I2
The sewing machine blade 3 is fixed through. Motor 42 is bit 4
1 in the forward direction and tighten the pole 1-14, but when the bolt +4 is tightened to a predetermined torque required for temporary tightening, the motor 42 stops rotating. After all the motors 42 stop rotating, the motor 42 rotates slightly in the opposite direction, releasing the large contact pressure between the bit 4+ and the inner wall of the hexagonal hole 14A of the bolt 14, making it easier to remove the bit 41 from the hexagonal hole 148. do. Thereafter, the support member 26 is raised by the pneumatic nolinder 29, and the via 41 is pulled from the bolt. With this, the temporary tightening operation of the sewing machine blade 3 is completed. In addition, in the above-described operation, after the bit 41 loosens the bolt 14, the bit 41
The sewing machine blade 3 is replaced while the sewing machine blade 3 is engaged with the bolt 14, but instead of this, it is possible to temporarily raise the support member 26 and separate the bit 41 from the bolt 14 before replacing the sewing machine blade 3. good. In this case, after replacing the sewing machine blade 3, the member 2 is again supported by the pneumatic cylinder 29.
6 is lowered to rotate 5 and each motor 42 in the forward direction. Then, the bit 41 also descends and enters the hexagonal hole 1 of 14.
4A, tighten the bolt, move the cutting block 13 toward the bottom of the groove 2, and fix the sewing machine blade 3 via the blade holding block 12. Even at this time, all the bits may not be inserted into the hexagonal holes of each bolt at the same time, but as the bits rotate, they are inserted one after another into the hexagonal holes of the bolts, so there is no problem.

Next, the sewing machine barrel 1 is rotated to apply the temporarily tightened sewing machine blade 3 to the receiving net 4, and the sewing machine blade 3 is pushed to a predetermined depth. After that, the support member 26 is lowered again and the bit 41 is engaged with the bolt 14, and as in the above temporary tightening, only the motor tightening torque is increased and one tightening operation is performed.After the zero tightening is completed, Reverse bit 41 slightly.

Next, move l-:;7 and then remove j: from the root, completing step 11.

In addition, in this example, the support member 26 holds the power wrench 40 that corresponds to all the ports 14 within If17J of the minon barrel l, but the power wrench does not necessarily hold all the bolts 14 within the If17J of the minon barrel l. It is not necessary to provide a corresponding number of bolts, and the number of bolts may be smaller than the number of bolts and may be movable laterally with respect to the support member 26 or together with the support member 26. For example, when six poles 1-1 and 4 are arranged in one bolt 2, three power wrenches 4o are provided corresponding to every other bolt, and three bolts 1-1 and 1-4 are provided. 1
After inserting 11υ, move the bolt 1 pin to the side and tighten the remaining 3 bolts.

In the above embodiment, both temporary tightening and final tightening of the bolt 14 are performed, but the present invention is not limited to this example, and only one of them may be performed.

For example, when tightening the bolt 14 with the power wrench 40, the torque is set to the torque required for temporary tightening or final tightening.

Only temporary tightening or only final tightening may be performed at the JA position 2o. Although a pneumatic flip is used as a means for moving the support member 26 up and down, any other means may be used instead, or even the support member 26 may be moved up and down manually. The engagement between the bit 41 and the bolt 14 is as follows.

It is not limited to a hexagonal section bit and a hexagonal hole, and can be changed as appropriate, and a hole into which a bolt head fits may be formed on the bit side.
is incorporated into a rotary printing press, and this device 20
It is also possible to install the machine in a separate location from the rotary printing press, bring in the sewing machine whose blade is to be replaced, and then tighten and loosen the bolts in the manner described above.

Effects of the Invention As explained above, the blade fixing port tightening/loosening device of the present invention can tighten the bolt for fixing the blade in the groove of the five-wheel machining cylinder to a predetermined torque, which conventionally requires skill. In addition, the blade replacement work, which previously took a long time, can be done extremely easily and in a short time.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention, FIG. 2 is a front view, FIG. 3 is a perspective view of the sewing machine barrel l and receiver barrel 4, and FIG.
Figures 5 and 6 show the blade fixing device 11 to 42 of the sewing machine barrel l.
The cross-sectional view, top view, and vertical cross-sectional view of FIG. It is a Ji side view. 1 Minonll112--groove 3- Minon blade-
4 Receiving barrel 11-Blade fixing device 12 Blade holding block IL-Wedge block 14 Bolt 20
- Blade fixing port tightening/loosening device 22 = Frame 26
-・- Support member 40 Power wrench 41- Bit 42 Motor 43- Campling patent applicant Miyakoshi Kikai Seizo Co., Ltd. Dai Nippon Printing Co., Ltd.

Claims (1)

[Scope of Claims] A groove extending in the longitudinal direction on the outer circumferential surface, a thin band-shaped blade mounted in the groove by being pressed against the side surface of the groove, and arranged in the depth direction of the groove for tightening or loosening the blade. A bolt tightening/loosening device used for tightening and loosening the bolts in a rotary machining cylinder having a plurality of bolts, the bolt tightening and loosening device comprising: a pedestal; A support member movable toward and away from the barrel; and a power wrench held by the support member, the power wrench having a bit that engages with and rotates a bolt head. A bit provided parallel to the moving direction of the support member, a motor for rotating the bit in both forward and reverse directions, means for controlling the tightening torque in the forward direction to a predetermined value, and A blade fixing bolt tightening/loosening device for a rotary machining cylinder, characterized in that it has a coupling that allows the blade to move backward.